Question

Explain the different types of keys in a relational model​

Answer 1

Answer:

Seven Types of DBMS keys are Super, Primary, Candidate, Alternate, Foreign, Compound, Composite, and Surrogate Key. A super key is a group of single or multiple keys which identifies rows in a table. Primary Key never accept null values while a foreign key may accept multiple null values.

Answer 2

Answer:

7 types

Explanation:

candidate,composite,compound,surrogate,alternate,foreign,primary

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